457. Non-prejudicial disclosures.

The disclosure of matter constituting an invention1 is to be disregarded in the case of a patent or an application for a patent if occurring later than six months immediately preceding the date of filing2 the application for the patent and:

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    (1)     the disclosure was due to, or made in consequence of, the matter having been obtained unlawfully or in breach of confidence by any person:

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      (a)     from the inventor or from any other person to whom the matter was made available in confidence by the inventor or who obtained it from the inventor because he or the inventor